#include <iostream>
using namespace std;
#define NUM 100
int main()
{
    //测试注释 
    //测试注释
    //测试注释
    //测试注释
    //测试注释
    //测试注释
    cout << "hello" << NUM << endl;
#ifdef SHOW 
    cout << SHOW << endl;
#else
    cout << "not found" << endl;
#endif
    return 0;
}
